Milano, 25 novembre 2015

Transcription

1 Milano, 25 novembre 2015 Gli atti dei convegni e più di contenuti su

2 J. Berthold, N. Bonavita, ABB Measurement & Analytics - mct Petrolchimico, Advances in Laser Spectroscopy High resolution and ultra-precise multi-gas applications by OA-ICOS technology for both environmental monitoring and process control

3 Advances in Laser Spectroscopy: OA-ICOS Outline Laser Analyzers Benefits and Limitations OA-ICOS Technology OA-ICOS Implementation OA-ICOS Applications and Results Further Developments and Applications 11/26/2015 Slide 2

4 Laser Analyzer Generalities Basics 11/26/2015 Slide 3

5 Laser Analyzer Generalities Basics Studying the absorbed spectra provides the gas molecule Fingerprints 11/26/2015 Slide 4

6 Laser Analyzers Generalities Basics Conventional Photometer Incoherent Light many frequencies oscillating in different directions Optical filters can be used to cancel out unnecessary frequencies Or advanced software used to interpret the data (i.e. Chemometrics) 11/26/2015 Slide 5

7 Laser Analyzers Generalities Basics Traditional Laser Coherent Light waves are identical and in phase (same frequency) Laser selected to focus on specific frequencies with known absorption lines Interferences are reduced, but scope to measure multiple components also 11/26/2015 Slide 6 limited (to 1 or 2 components)

8 Laser Analyzers Generalities Basics Three Main Technologies TDLAS Tunable Diode Laser Absorption Spectroscopy Laser (Coherent Light) Optical Path Lenght 1 12 meters Single or dual pass Detector Optical Path Lenght FTIR Fourier Transform InfraRed IR Source (Incoherent Light) 3 10 meters Multi pass cell Detector ICOS Integrated Cavity Optical Spectroscopy 11/26/2015 Slide 7 Laser (Coherent Light) Optical Path Lenght 1 Km up to 25 km Optical cavity with highly reflective mirrors Detector

9 Limitation of Conventional TDLAS Limited to little or no background absorption Limited sensitivity Significant signal/noise issues Light source/laser noise (RIN) Short path lengths Nonlinear at high concentrations Cross interferences and false positives Limited dynamic range Optical bench alignment issues Sensitive to vibration and obscuration 11/26/2015 Slide 8

10 Advances in Laser Spectroscopy: OA-ICOS Outline Laser Analyzers Benefits and Limitations OA-ICOS Technology OA-ICOS Implementation OA-ICOS Applications and Results Further Developments and Applications 11/26/2015 Slide 9

11 Laser Analyzers Generalities Conventional TDLAS: Overview Beer-Lambert Law: II = 1 ee ααll eeeeee II 0 II II 0 α(λ) L eff = change in laser intensity = absorption coefficient = effective optical path length TDLAS: direct measurement of gas concentration minimal calibration Provides fast, gas-specific measurements with no consumables Non-intrusive: Ideal for monitoring in hostile conditions LGR uses TDLAS for cross-stack measurements of O 2, NH 3, HCl, etc Single pass TDLAS may not provide sufficient sensitivity for some apps Limit of Detection in the ppm (1 part in 10 6 ) range, typically 11/26/2015 Slide 10

12 OA-ICOS: Off-Axis Integrated Cavity Optical Spectrosc. Combines high resolution with long path lengths Diode Laser laser control electronics Gas Inlet T P HR mirrors (R~0.9999) Gas Outlet (to vacuum pump) Lens Detector Data collection and analysis system Optical cavity provides longest effective path length of any laser analyzer available (up to 25 kilometers or longer) Very robust exact optical bench alignments are not critical Mirrors cleaned in the field in <20 minutes! OA-ICOS can be employed at any wavelength from UV to mid-ir LDL s 1-50 ppb in complex matrices and as low as 200ppt range for some gases in ambient air Single and Dual lasers in single cavity for multi-species detection 11/26/2015 Slide 11

13 Cavity Enhanced Absorption Spectroscopy (CEAS) Measured high-resolution spectra yields accurate data 11/26/2015 Slide 12 Measures baseline, absorption, detector offset and Ring down time in every sweep to confirm path length at every data point! Operating at lower than ambient pressure to narrow spectral peaks and improve Voigt Profile for fit Scan laser at Hz, measurements every 1-10 ms Averaging ~ 1 sec of data (typical)

14 CEAS: Cavity-Enhanced Absorption Spectroscopy Measurements based on high-resolution absorption spectra Chemometrics enables quantification of multiple gases in complex mixtures Enables single-laser instrument to accurately report multiple gas species for best value proposition

15 Advances in Laser Spectroscopy: OA-ICOS Outline Laser Analyzers Benefits and Limitations OA-ICOS Technology OA-ICOS Implementation OA-ICOS Applications and Results Further Developments and Applications 11/26/2015 Slide 14

16 OA-ICOS Implementation LGR Experimental Setup simple, robust, serviceable Simple to service anywhere by anyone mirrors may be cleaned in minutes

17 OA-ICOS Implementation The Company Founded in 1994, acquired by ABB in October 2013 Located in Silicon Valley (Mountain View, California) 47 employees 12 Ph.D. scientists Pioneer and world leader in laser-based gas sensing Invented all cavity enhanced absorption spectroscopy methods including cavity ringdown spectroscopy (CRDS), ICOS, Off-axis ICOS Many patents (>12) granted for analytical methods Hundreds of scientific papers/articles published in peerreview journals Serves environmental, research, industrial, and medical markets Sold >1500 instruments on all 7 continents 11/26/2015 Slide 16

18 OA-ICOS Implementation ABB-LGR ICOS Laser Process Analyzer IP 54, NEMA 4 and ATEX, ZONE 2 MODBUS RTU, 4-20 mamp & Relays, w/ unique certified USP file port for diagnostics and file download access Options for heated flow path and Hastelloy components 11/26/2015 Slide 17

19 OA-ICOS Implementation Reliable ABB Electrical/Mechanical Components Easy access for install & serviceability Industry Standard Analogue 4-20 mamp, Digital MODBUS, and Relay Contact Smart Leak Compensation X purge system System integrity sensors & warnings for fast diagnostics via MODBUS or discreet 4-20 mamp outputs 11/26/2015 Slide 18

20 OA-ICOS Implementation ABB-LGR ICOS: Application Table Analyzer Type Precision 1 second of averaging Minimum 100 seconds of averaging Linearity Time Response Measurement Range CH 4, CO, CO 2 CH 4 : 4 ppb CO: 130 ppb CO 2 : 190 ppb CH 4 : 2 ppb CO: 65 ppb CO 2 : 95 ppb R 2 = <10 seconds CH 4 : ppm CO: ppm CO 2 : ppm H 2 S, CO 2 H 2 S: 13 ppb CO 2 : 100 ppb H 2 S: 7 ppb CO 2 : 50 ppb R 2 = <10 seconds H 2 S: ppm CO 2 : ppm O 2 O 2 : 200 ppm O 2 : 100 ppm R 2 = <10 seconds O 2 : 0 100% 11/26/2015 Slide 19

21 OA-ICOS Implementation ABB-LGR ICOS: Reliable, Accurate, Easy and Economical CoO Demonstrable and swift ROI on both CAPEX and CoO over traditional techniques No consumables, columns, carrier gases or liquids, or pre-scrubbers are required Simplified sample conditioning reduces system complexity and maintenance cost Minimal annual PM requirement estimated at 4 hours Significantly higher sensitivity compared with conventional laser analyzers Higher accuracy and precision enables improved process and quality control Fast response time allows rapid adjustment to process changes and upset conditions Lack of consumables reduces cost of ownership and increases ROI 11/26/2015 Slide 20

22 Advances in Laser Spectroscopy: OA-ICOS Outline Laser Analyzers Benefits and Limitations OA-ICOS Technology OA-ICOS Implementation OA-ICOS Applications and Results Further Developments and Applications 11/26/2015 Slide 21

23 List of Industrial Applications Industrial Process Control Acetylene/Ammonia in Ethylene Methane Carbon Isotope Analyzer for Energy Exploration Syngas Analyzer (CO, CO 2, H 2 O, C 2 H 2, HCN, ) Combustion Analyzer (CO, CO 2, H 2 O, C 2 H 2, HCN, O 2, ) Isotopic Carbon Dioxide Analyzer for Mining Applications Environmental Monitoring Ammonia Analyzer (NH 3, H 2 O) Greenhouse Gas Analyzer (CH 4, CO 2, H 2 O) HCl Analyzer HCl/HF Analyzer H 2 S/NH 3 Analyzer (in air or natural gas) Natural Gas Leak Detector (CH 4, C 2 H 4 )

24 OA-ICOS Applications and Results Success Story # 1: Semiconductor & Electronics Safety Leak Detection & Contamination Process Monitoring Ambient Air & Clean Room Monitoring for acid & neutralizing process solutions. >150 analyzers installed over the past 15 months Process Contamination Monitoring for Acid Etching, Vapor Deposition, etc. Customer needs improved sensitivity & speed of best COO LGR offers best performance against legacy technologies; 0.2 to 0.5 Parts per Billion HCl + HF and NH3 Ultra-trace leak detection measurements for minimizing long term exposure for personnel Fast response for safety alarm systems: 1 second, 10 seconds Two gases in one analyzer; such as HF+HCL, HCl + NH3 for value purchase 24-hour Global Service Support 11/26/2015 Slide 23

25 OA-ICOS Applications and Results Success Story # 2: Industrial Gas & Specialty Chemicals Quality Assurance in Trace H2S, HCl, NH3 and others Trace Gas analysis for Contaminants in Industrial Reagent & Blanket Gases such as Nitrogen and Hydrogen Ultra-trace measurements of H2S in high purity Nitrogen for Gas Chromatography calibration cylinders. LGR providing parts per billion level analyses with accuracy & precision GP analyzer for Quality Assurance, and matching Process Analyzer for Production volumes Air Products, Air Liquide, Praxair and others moving to Laser Spectroscopy for best product quality. 11/26/2015 Slide 24

26 OA-ICOS Applications and Results Success Story # 3: O&G, Chemicals & Petrochemicals Ethylene Purity High levels of C2H6 undetected by GC, but reported by OA-ICOS OA-ICOS is up to 10X faster than GC; enables active control of processes No mirror fouling or misalignment issues; no columns or carrier gases LGR s OA-ICOS can be an order of magnitude more sensitive than GC Speed of response improves process efficiency Field Serviceability of OA-ICOS reduces downtime Economic Cost-of-Ownership shows swift Return after Investment 11/26/2015 Slide 25

27 Advances in Laser Spectroscopy: OA-ICOS Outline Laser Analyzers Benefits and Limitations OA-ICOS Technology OA-ICOS Implementation OA-ICOS Applications and Results Further Developments and Applications 11/26/2015 Slide 26

28 Further Developments and Applications Natural Gas, BioGas, Food & Beverage, Refining Natural Gas/BioGas Production & Distribution H 2 S + CO 2 + Oxygen and Moisture measurements Purity & Custody Transfer Applications Natural Gas Leak Detection Methane and Ethane differentiation for Source confirmation Aging public utilities pipeline leak monitoring, with GPS location Food & Beverage Quality Wine Verifications by Isotope Ratio CO 2 purity in carbonated beverages & Carbon Sequestration Refinery & Petrochemical Combustion Efficiency Trace Oxygen in Combustion Recovery Hydrogen Purity in Catalyst Regeneration 11/26/2015 Slide 27

29 The ABB-LGR Advantages Summary 1. LGR invented all major cavity enhanced absorption spectroscopy techniques 2. LGR patented OA-ICOS, 4th-gen CEAS 3. Easiest and least expensive to build and have highest reliability 4. Only LGR records absorption spectra by continuously tuning laser wavelengths. This yields highest accuracy, superior linearity and largest dynamic range.

30 For More Information: Andrea Formenton Nunzio Bonavita 11/26/2015 Slide 29

31 Thank You! 11/26/2015 Slide 30

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